On gravitomagnetic precession around black holes

被引:74
作者
Merloni, A
Vietri, M
Stella, L
Bini, D
机构
[1] Univ Rome 1, Int Ctr Relativist Astrophys, I-00185 Rome, Italy
[2] Univ Roma 3, I-00147 Rome, Italy
[3] Osservatorio Astron Roma, I-00040 Monte Porzio Catone, Roma, Italy
[4] Ist Applicaz Matemat, I-80131 Naples, Italy
关键词
accretion; accretion discs; black hole physics; relativity;
D O I
10.1046/j.1365-8711.1999.02307.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We compute exactly the frequency of Lense-Thirring precession for point masses in the Kerr metric, for arbitrary black hole mass and specific angular momentum. We show that this frequency, for point masses at or close to the innermost stable orbit, and for holes with moderate to extreme rotation, is less than, but comparable to, the rotation frequency. Thus, if the quasi-periodic oscillations (QPOs) observed in the modulation of the X-ray flux from some black hole candidates (BHCs) are caused by Lense-Thirring precession of orbiting material, we predict that a separate, distinct QPO ought to be observed in each object.
引用
收藏
页码:155 / 159
页数:5
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